Spray Foam Insulation cost: Boise City vs Idaho Falls (2026)
In 2026, spray foam insulation is about 1% more expensive in Boise City than in Idaho Falls. Most homeowners pay around $3,850 in Boise City versus $3,800 in Idaho Falls — a gap of roughly $50.
Boise City ID
Typically around $3,850
Idaho Falls ID
Lower costTypically around $3,800
Boise City vs Idaho Falls: full breakdown
| Factor | Boise City | Idaho Falls |
|---|---|---|
| Typical 2026 cost | $3,850 | $3,800 |
| Estimated range | $1,550–$6,150 | $1,500–$6,050 |
| Labor index (vs US) | ×0.97 | ×0.95 |
| Climate zone | Cold | Cold |
| Climate factor | ×1.06 | ×1.06 |
| Local permit | None | None |
| Labor share | $2,100 | $2,100 |
| Materials/equipment | $1,750 | $1,700 |
Localized 2026 planning estimates — not quotes. Each city adjusts the national spray foam insulation range for local labor, climate and permits.
Boise City vs Idaho Falls
Is spray foam insulation cheaper in Boise City or Idaho Falls?
In 2026, spray foam insulation is cheaper in Idaho Falls at about $3,800, versus $3,850 in Boise City — a difference of about $50 (1%).
Why does spray foam insulation cost more in Boise City than Idaho Falls?
The main driver is local labor rates: Boise City's labor index is 0.97 versus 0.95 in Idaho Falls. Climate zone (cold vs cold) also shift the total.
How much is spray foam insulation in Boise City, ID?
In Boise City, spray foam insulation typically runs $1,550–$6,150 in 2026, with most homeowners paying around $3,850.
Updated June 2026 · By Costadia Editorial